From: Ingo Molnar <mingo@kernel.org>
To: Eric Biggers <ebiggers@kernel.org>
Cc: x86@kernel.org, linux-crypto@vger.kernel.org,
linux-kernel@vger.kernel.org, Ard Biesheuvel <ardb@kernel.org>,
Ben Greear <greearb@candelatech.com>,
Xiao Liang <shaw.leon@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
"Jason A . Donenfeld" <Jason@zx2c4.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [RFC PATCH v2] x86/fpu: make kernel-mode FPU reliably usable in softirqs
Date: Thu, 6 Mar 2025 12:42:05 +0100 [thread overview]
Message-ID: <Z8mKDZOI5Q3XRtCp@gmail.com> (raw)
In-Reply-To: <20250305203018.GB19889@sol.localdomain>
* Eric Biggers <ebiggers@kernel.org> wrote:
> Deleting the ldmxcsr(MXCSR_DEFAULT) adds about 14 MB/s.
BTW., that's still a +3% performance improvement, so it is worth
considering in addition to the current patch IMO.
Thanks,
Ingo
next prev parent reply other threads:[~2025-03-06 11:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-04 20:49 [RFC PATCH v2] x86/fpu: make kernel-mode FPU reliably usable in softirqs Eric Biggers
2025-03-05 9:07 ` Ingo Molnar
2025-03-05 16:55 ` Dave Hansen
2025-03-05 17:37 ` Ingo Molnar
2025-03-05 18:04 ` Dave Hansen
2025-03-05 18:13 ` Ingo Molnar
2025-03-05 21:22 ` David Laight
2025-03-05 17:39 ` Eric Biggers
2025-03-05 18:09 ` Ingo Molnar
2025-03-05 20:30 ` Eric Biggers
2025-03-06 11:42 ` Ingo Molnar [this message]
2025-03-06 12:09 ` Peter Zijlstra
2025-03-06 12:00 ` [tip: x86/fpu] x86/fpu: Improve crypto performance by making " tip-bot2 for Eric Biggers
2025-03-06 17:54 ` Eric Biggers
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